Mr Sandford, 38, was assaulted in his home in Littlehey Close, Maltby, at about 1am on Friday October 30. He was receiving treatment for injuries suffered during the assault, but collapsed and died in hospital at about 4.45am on the morning of Wednesday 4 November.

A 59-year-old man, who was also arrested on suspicion of murder, has been released on police bail. A 29-year-old man and a 29-year-old woman, also arrested as part of the investigation, remain on police bail.